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- W2005698911 abstract "Oxidation of iron sulfide in supercritical water was investigated in the batch reactor. Iron sulfide was converted in two parallel processes: gasification by water and oxidation by oxygen. Assuming that the reaction order of H 2 O was 0, the activation energy and pre-exponential factor of the gasification process were determined to be 43kJ mol -1 and 22.4 min -1 , correspondingly. It is found that above 773K the oxidation process was limited by the mass transfer of O2 to particles surface. Below 773K, with an assumption of zero order in H 2 O concentration and first-order reaction in oxygen concentration, the activation energy and pre-exponential factor for the rate of oxidation were estimated as154kJ mol -1 and 1.7×10 6 m 3 mol -1 min -1 , respectively. With supercritical water oxidation under the experimental conditions, the sulfur-containing components in the product were sulfide, sulfite and sulfate, in which sulfide and sulfate were predominant. It is likely to completely convert the sulfur to the sulfate by supercritical water oxidation using high temperature and long reaction time. The reaction pathway of iron sulfide could be expressed as: iron sulfide → sulfide → sulfite → sulfate." @default.
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- W2005698911 date "2012-05-01" @default.
- W2005698911 modified "2023-09-23" @default.
- W2005698911 title "Kinetics Behavior and Sulfur Transformations of Iron Sulfide during Supercritical Water Oxiation" @default.
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- W2005698911 doi "https://doi.org/10.4028/www.scientific.net/amr.524-527.1939" @default.
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